title: Action of group A streptococcus extracellular product(s) on the connective tissue of the human heart valve.
mesh_terms: D011232:Chemical Precipitation; D003238:Connective Tissue; D006023:Glycoproteins / Q000276:immunology*; D006351:Heart Valves / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D011135:Polysaccharides, Bacterial / Q000276:immunology*; D013297:Streptococcus pyogenes / Q000276:immunology*
chemical_list: D006023:Glycoproteins; D011135:Polysaccharides, Bacterial